Yes, Geisha is definitely a goth band because most of their albums belong to the Gothic Rock genre, which is a core subgenre of goth music. Albums like Geisha EP are examples of their goth sound.
Geisha is located in Finland, South Ostrobothnia, Ilmajoki, active in 1982 — 1984. You can find more information about Geisha on their GothDB band page.